網(wǎng)上資料沒有涯贞，特意一補(bǔ)

用小程序做最近做藍(lán)牙軟件開發(fā)，CRC8多項(xiàng)式是什么鬼晤锹，幸好文檔有C語音的demo坛吁，慢慢轉(zhuǎn)過來吧

//CRC8 MAXIM x8+x5+x4+1劳殖，CRC8多項(xiàng)式

function encodeCrc8(hex){

? ? var _crc8 = [

? ? ? ? 0x00, 0x5e, 0xbc, 0xe2, 0x61, 0x3f, 0xdd, 0x83,?

? ? ? ? 0xc2, 0x9c, 0x7e, 0x20, 0xa3, 0xfd, 0x1f, 0x41,?

? ? ? ? 0x9d, 0xc3, 0x21, 0x7f, 0xfc, 0xa2, 0x40, 0x1e,?

? ? ? ? 0x5f, 0x01, 0xe3, 0xbd, 0x3e, 0x60, 0x82, 0xdc,?

? ? ? ? 0x23, 0x7d, 0x9f, 0xc1, 0x42, 0x1c, 0xfe, 0xa0,?

? ? ? ? 0xe1, 0xbf, 0x5d, 0x03, 0x80, 0xde, 0x3c, 0x62,?

? ? ? ? 0xbe, 0xe0, 0x02, 0x5c, 0xdf, 0x81, 0x63, 0x3d,?

? ? ? ? 0x7c, 0x22, 0xc0, 0x9e, 0x1d, 0x43, 0xa1, 0xff,?

? ? ? ? 0x46, 0x18, 0xfa, 0xa4, 0x27, 0x79, 0x9b, 0xc5,?

? ? ? ? 0x84, 0xda, 0x38, 0x66, 0xe5, 0xbb, 0x59, 0x07,?

? ? ? ? 0xdb, 0x85, 0x67, 0x39, 0xba, 0xe4, 0x06, 0x58,?

? ? ? ? 0x19, 0x47, 0xa5, 0xfb, 0x78, 0x26, 0xc4, 0x9a,?

? ? ? ? 0x65, 0x3b, 0xd9, 0x87, 0x04, 0x5a, 0xb8, 0xe6,?

? ? ? ? 0xa7, 0xf9, 0x1b, 0x45, 0xc6, 0x98, 0x7a, 0x24,?

? ? ? ? 0xf8, 0xa6, 0x44, 0x1a, 0x99, 0xc7, 0x25, 0x7b,?

? ? ? ? 0x3a, 0x64, 0x86, 0xd8, 0x5b, 0x05, 0xe7, 0xb9,?

? ? ? ? 0x8c, 0xd2, 0x30, 0x6e, 0xed, 0xb3, 0x51, 0x0f,?

? ? ? ? 0x4e, 0x10, 0xf2, 0xac, 0x2f, 0x71, 0x93, 0xcd,?

? ? ? ? 0x11, 0x4f, 0xad, 0xf3, 0x70, 0x2e, 0xcc, 0x92,?

? ? ? ? 0xd3, 0x8d, 0x6f, 0x31, 0xb2, 0xec, 0x0e, 0x50,?

? ? ? ? 0xaf, 0xf1, 0x13, 0x4d, 0xce, 0x90, 0x72, 0x2c,?

? ? ? ? 0x6d, 0x33, 0xd1, 0x8f, 0x0c, 0x52, 0xb0, 0xee,?

? ? ? ? 0x32, 0x6c, 0x8e, 0xd0, 0x53, 0x0d, 0xef, 0xb1,?

? ? ? ? 0xf0, 0xae, 0x4c, 0x12, 0x91, 0xcf, 0x2d, 0x73,?

? ? ? ? 0xca, 0x94, 0x76, 0x28, 0xab, 0xf5, 0x17, 0x49,?

? ? ? ? 0x08, 0x56, 0xb4, 0xea, 0x69, 0x37, 0xd5, 0x8b,?

? ? ? ? 0x57, 0x09, 0xeb, 0xb5, 0x36, 0x68, 0x8a, 0xd4,?

? ? ? ? 0x95, 0xcb, 0x29, 0x77, 0xf4, 0xaa, 0x48, 0x16,?

? ? ? ? 0xe9, 0xb7, 0x55, 0x0b, 0x88, 0xd6, 0x34, 0x6a,?

? ? ? ? 0x2b, 0x75, 0x97, 0xc9, 0x4a, 0x14, 0xf6, 0xa8,?

? ? ? ? 0x74, 0x2a, 0xc8, 0x96, 0x15, 0x4b, 0xa9, 0xf7,?

? ? ? ? 0xb6, 0xe8, 0x0a, 0x54, 0xd7, 0x89, 0x6b, 0x35

? ? ];

? ? var typedArray = new Uint8Array(hex.match(/[\da-f]{2}/gi).map(function (h) {

? ? ? return parseInt(h, 16)

? ? }))

? ? var ucLen=typedArray.length;

? ? var ucPtr= typedArray;

? ? var ucCRC8 = 0;

? ? var i = 0;

? ? while(ucLen--)

? ? {

? ? ? ? ucCRC8=_crc8[ucCRC8 ^ ucPtr[i]];

? ? ? ? i++;

? ? }

? ? return ucCRC8.toString(16).toUpperCase();

}